What is the use of Calculus? How is it use in jobs? What jobs use Calculus?

Calculus is used in engineering, economics, any physical science, and in business (e.g., actuary studies and statistics).

2 answers

1 pt) At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 21 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.)
Calculus is rate of change. Anything that measures change, slope, will pretty much use calculus. Though in my case, when I've used it on the job it doesn't "feel like math"